As entertainment, Tenacious D succeeds surprisingly well -- for the first few listens.... The only long-term replay value you'll get from this record will come from playing it for friends who haven't heard it.

Unwieldy psychedelic dinosaurs like "First Wave Intact" and the title track hint that they're looking to become the new gods of bong-powered thunder -- but then they drop a bomb like the sleek, urbanely scoffing "Road Leads Where It's Led" and instantly re-cast themselves as black-clad top forty gatecrashers looking for a fast ticket to fortune and fame.

By the time "Our Mutual Friend"'s symphonic percussion and hammering cellos reach their crashing apex, the album begins to feel a little like the fourth consecutive hour at a well-stocked party full of musical theater majors.

Sure, they meld muscular riffs with smoky organ meditations, folky landscapes, pompous orchestration and the occasional IDM skitter, but not without losing the transcendent detail that makes each of these genres worth savoring and holding on to.

Yes, it has a certain something that makes you bob your head and/or shake your ass to songs that you'd probably be ticked off by if someone drove past your pad blasting them out his windows. But no, it's not the stuff that great CDs are made of.

With Frances the Mute, the Mars Volta have unfurled a big and bold artistic statement... Unfortunately, that bold artistic statement is rife with pomposity and glimpses of prog-rock at its most horrifically self-indulgent.